Listed as a CPA in IRS public preparer records. Source: IRS PTIN FOIA extract (Feb 2026), retrieved October 23, 2026. https://www.irs.gov/pub/foia/foia-arizona-extract.csv No state license number is on file. Specialties are blank until this preparer claims the listing. CPA Seek does not contact preparers.

William John Marko

CPA

Gilbert, Arizona 85233

William John Marko, CPA in Gilbert, AZ

Specialties

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Licenses

No state license number is on file.

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